reactos/hal/halx86/generic/misc.c

   1 /*
   2  * PROJECT:         ReactOS HAL
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            hal/halx86/generic/misc.c
   5  * PURPOSE:         Miscellanous Routines
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  *                  Eric Kohl (ekohl@abo.rhein-zeitung.de)
   8  */
   9
  10 /* INCLUDES ******************************************************************/
  11
  12 #include <hal.h>
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 /* PRIVATE FUNCTIONS *********************************************************/
  17
  18 VOID
  19 NTAPI
  20 HalpCheckPowerButton(VOID)
  21 {
  22     /* Nothing to do on non-ACPI */
  23     return;
  24 }
  25
  26 PVOID
  27 NTAPI
  28 HalpMapPhysicalMemory64(IN PHYSICAL_ADDRESS PhysicalAddress,
  29                         IN ULONG NumberPage)
  30 {
  31     /* Use kernel memory manager I/O map facilities */
  32     return MmMapIoSpace(PhysicalAddress,
  33                         NumberPage << PAGE_SHIFT,
  34                         MmNonCached);
  35 }
  36
  37 VOID
  38 NTAPI
  39 HalpUnmapVirtualAddress(IN PVOID VirtualAddress,
  40                         IN ULONG NumberPages)
  41 {
  42     /* Use kernel memory manager I/O map facilities */
  43     MmUnmapIoSpace(VirtualAddress, NumberPages << PAGE_SHIFT);
  44 }
  45
  46 VOID
  47 NTAPI
  48 HalpSetInterruptGate(ULONG Index, PVOID address)
  49 {
  50   KIDTENTRY *idt;
  51   KIDT_ACCESS Access;
  52
  53   /* Set the IDT Access Bits */
  54   Access.Reserved = 0;
  55   Access.Present = 1;
  56   Access.Dpl = 0; /* Kernel-Mode */
  57   Access.SystemSegmentFlag = 0;
  58   Access.SegmentType = I386_INTERRUPT_GATE;
  59
  60   idt = (KIDTENTRY*)((ULONG)KeGetPcr()->IDT + index * sizeof(KIDTENTRY));
  61   idt->Offset = (USHORT)((ULONG_PTR)address & 0xffff);
  62   idt->Selector = KGDT_R0_CODE;
  63   idt->Access = Access.Value;
  64   idt->ExtendedOffset = (USHORT)((ULONG_PTR)address >> 16);
  65 }
  66
  67 /* FUNCTIONS *****************************************************************/
  68
  69 /*
  70  * @implemented
  71  */
  72 VOID
  73 NTAPI
  74 HalHandleNMI(IN PVOID NmiInfo)
  75 {
  76     UCHAR ucStatus;
  77
  78     /* Get the NMI Flag */
  79     ucStatus = READ_PORT_UCHAR((PUCHAR)0x61);
  80
  81     /* Display NMI failure string */
  82     HalDisplayString ("\n*** Hardware Malfunction\n\n");
  83     HalDisplayString ("Call your hardware vendor for support\n\n");
  84
  85     /* Check for parity error */
  86     if (ucStatus & 0x80)
  87     {
  88         /* Display message */
  89         HalDisplayString ("NMI: Parity Check / Memory Parity Error\n");
  90     }
  91
  92     /* Check for I/O failure */
  93     if (ucStatus & 0x40)
  94     {
  95         /* Display message */
  96         HalDisplayString ("NMI: Channel Check / IOCHK\n");
  97     }
  98
  99     /* Halt the system */
 100     HalDisplayString("\n*** The system has halted ***\n");
 101     //KeEnterKernelDebugger();
 102 }
 103
 104 /*
 105  * @implemented
 106  */
 107 UCHAR
 108 FASTCALL
 109 HalSystemVectorDispatchEntry(IN ULONG Vector,
 110                              OUT PKINTERRUPT_ROUTINE **FlatDispatch,
 111                              OUT PKINTERRUPT_ROUTINE *NoConnection)
 112 {
 113     /* Not implemented on x86 */
 114     return 0;
 115 }
 116
 117 /*
 118  * @implemented
 119  */
 120 VOID
 121 NTAPI
 122 KeFlushWriteBuffer(VOID)
 123 {
 124     /* Not implemented on x86 */
 125     return;
 126 }
 127